In a two-stage model insurance companies first decide upon risk classification and then compete in prices. I show that the observed heterogeneous behavior of similar firms is compatible with rational behavior. On the deregulated German insurance market individual application of classification...

In media markets, products are highly differentiated but prices are often bunched at apparent focal points. I use a comprehensive cross-section data set on the German book market to assess whether such focal points are a result of upstream coordination and whether the option to impose resale...

Herausforderungen für die Gewährleistung von Versorgungssicherheit -- Überblick über ergänzende Mechanismen zur Sicherstellung von Versorgungssicherheit -- Modellierung von Kapazitätszubau im Rahmen eines mengenbasierten Kapazitätsmarktes -- Analyse und Interpretation unterschiedlicher...

This paper analyses the quality provision of interrelated market firms under different market structures both theoretically and empirically. A theoretical model is built, where a media firm offers newspapers in a primary market and advertising space in the secondary market. Furthermore, the...

Using a newly constructed dataset on German hospitals, which includes 24 process and outcome indicators of clinical quality, we test whether quality has increased in various clinical areas since the introduction of mandatory quality reports and the online publication of part of the collected...